Best overlap: 11:00 AM to 6:00 PM in Sydney is 8:00 AM to 3:00 PM in Shenzhen.
Aim for 11:00 AM to 6:00 PM Sydney time — that's 8:00 AM to 3:00 PM over in Shenzhen. Despite the 3-hour difference, a 7-hour overlap keeps things simple and gives both teams breathing room. These times hold for most of the year, but Sydney's daylight saving (which Shenzhen doesn't use) shifts them by an hour twice annually.
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